Pyrosphere is a stage in Super Smash Bros. for Wii U. This stage comes from the Metroid series, specifically Metroid: Other M. This is the place where Samus takes on her final fight with Clone Ridley. It has the same lava pillars and the gash from which he entered.

This stage is a floating platform with a few smaller platforms on it. During random events Ridley will appear as a stage hazard and boss character. If a player damages enough he can be converted to an ally for a short period of time. Anyone who defeats him will be granted a KO in Time Battles.